Answer:
Physical change
Explanation:
No new substances were produced so it is physical change.
Answer:
The values for spin quantum number +1/2 and - 1/2
Explanation:
Principal quantum number denoted by (n) is used to describe the shell or orbits that electrons are found. Principal quantum number can assume a value of n= 1,2, 3, 4,5............ which indicates K, L, M, N, O shell respectively.
To know the maximum number of electrons in each shell, the formula (2n²) can be used. The letter 'n' denotes the values of principal quantum number 1,2,3,4
For example
- n=1 (K shell) has maximum number of 2 electrons
- n=2 (L shell) has the maximum number of 8 electrons
- n=3 (M shell) has the maximum number of 18 electrons
- n=4 (N shell) has the maximum number of 32 electrons
All the electron in each shell will have a spin quantum number of +1/2 and - 1/2. One electron in each degenerate orbital will spin up (+1/2) while the other electron will spin down (-1/2).
Terri and Ernesto should both use geographic maps.
may i have brainliest? :D
The number of atoms that remains after 3 half-lives given that it was originally 300000 atoms is 37500 atoms
<h3>Data obtained from the question</h3>
- Original amount (N₀) = 300000 atoms
- Number of half-lives (n) = 3
- Amount remaining (N) =?
<h3>How to determine the amount remaining</h3>
The amount remaining after 3 half-lives can be obtained as illustrated below:
N = N₀ / 2ⁿ
N = 300000 / 2³
N = 300000 / 8
N = 37500 atoms
Learn more about half life:
brainly.com/question/26374513
#SPJ1